fix(msp): preserve nacos dependency for mse clusters

[luobily]

What this PR does / why we need it:

Which issue(s) this PR fixes:

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ChangeLog

Language	Changelog
🇺🇸 English	去掉 mse-nacos 的无用分支逻辑
🇨🇳 中文	fix(msp): preserve nacos dependency for mse clusters

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Avoid deploying Nacos child add-ons on MSE

When an MSE cluster has MS_NACOS_* and config-center/registercenter needs a new Nacos tenant, preserving the raw nacos add-on sends the recursive deploy through the normal Nacos handler. The coordinator resolves that handler's dice add-ons before checking CheckIfHasCustomConfig (coordinator.go:123-180), and the Nacos handler is wired to consume MySQL subresource output (nacos.go:60-65), so the first tenant path can create an unused MySQL dependency/tenant before switching to the external MSE Nacos. The same expectation is mirrored in the registercenter test; please strip Nacos child add-ons for the MSE custom path or otherwise keep tenant creation without deploying Nacos's internal dependencies.

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[codecov]

Codecov Report

❌ Patch coverage is 35.29412% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 15.84%. Comparing base (705dd82) to head (117a892).

Files with missing lines	Patch %	Lines
...pps/msp/resource/deploy/coordinator/coordinator.go	40.00%	9 Missing ⚠️
...l/apps/msp/resource/deploy/handlers/nacos/nacos.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6786      +/-   ##
==========================================
+ Coverage   15.82%   15.84%   +0.01%     
==========================================
  Files        3998     3998              
  Lines      328179   328165      -14     
==========================================
+ Hits        51933    51983      +50     
+ Misses     270350   270281      -69     
- Partials     5896     5901       +5     

Flag	Coverage Δ
by-github-actions	15.84% <35.29%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...ource/deploy/handlers/configcenter/configcenter.go	0.00% <ø> (ø)
...e/deploy/handlers/registercenter/registercenter.go	0.00% <ø> (ø)
...l/apps/msp/resource/deploy/handlers/nacos/nacos.go	0.00% <0.00%> (ø)
...pps/msp/resource/deploy/coordinator/coordinator.go	7.36% <40.00%> (+3.99%)	⬆️

... and 5 files with indirect coverage changes

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